Abstract: A rotation device includes a rotator that includes a recessed portion formed on an outer circumferential surface and that rotates in a predetermined rotation direction, a removing unit that comes into contact with a portion of the outer circumferential surface in a range from an upstream end to a downstream end of the recessed portion in the rotation direction due to rotation of the rotator and that removes a foreign substance that adheres to the outer circumferential surface, an application unit that applies an inward load to the removing unit inward in a radial direction of the rotator, and an inclined surface that is located at the removing unit or the upstream end and that comes into contact with the other of the removing unit or the upstream end to move the removing unit entering the recessed portion due to the inward load outward in the radial direction of the rotator along with rotation of the rotator.

Abstract: A transport device includes multiple rotation members that rotate, a cycle member that has a loop shape, and that is wound around the multiple rotation members to cycle together with rotation of the rotation members, at least one holding member that is attached to the cycle member, that cycles together with the cycle member, and that holds a leading end portion of a recording medium while being spaced apart from each other in a width direction when the leading end portion arrives at a holding position, and a deformation member that deforms the leading end portion in a thickness direction throughout the width direction by time when the leading end portion arrives at the holding position.

Abstract: Based on an exhaust gas temperature on an upstream side acquired by an upstream temperature acquisition device, in performing control of supplying an unburned fuel to an oxidation catalyst device in a case where the exhaust gas temperature on the upstream side is lower than a low temperature, a control device performs control of adjusting at least one of an injection timing of a cylinder injection valve and opening-closing timing of an exhaust valve at least one of before and after the supplying control; raising a temperature of the exhaust gas that substantially free of unburned fuel discharged from the exhaust valve to be higher than the low temperature; and warming the oxidation catalyst device until a predetermined warming period has passed.

Abstract: Based on an exhaust gas temperature on an upstream side acquired by an upstream temperature acquisition device, in performing control of supplying an unburned fuel to an oxidation catalyst device in a case where the exhaust gas temperature on the upstream side is lower than a low temperature, a control device performs control of adjusting at least one of an injection timing of a cylinder injection valve and opening-closing timing of an exhaust valve at least one of before and after the supplying control; raising a temperature of the exhaust gas that substantially free of unburned fuel discharged from the exhaust valve to be higher than the low temperature; and warming the oxidation catalyst device until a predetermined warming period has passed.